Dinosaur's color is confirmed

Tail feathers are orange, scientists say

WASHINGTON - Scientists have for the first time confirmed color in a dinosaur. Don't think purple, as in Barney, but reddish-orange, as in Conan O'Brien.

The first solid proof of pigmentation has been spotted in the fossilized tail feathers of a smallish meat-eating dinosaur found in China and named Sinosauropteryx. The creature seems to have russet-colored rings, according to a paper published online Wednesday in the journal Nature.

That 125 million-year-old tail has the same internal cellular coloring agents as the hair of a red-haired person, said study lead author Mike Benton, a professor of paleontology at the University of Bristol in England. The same finding provides what some outside experts say is more conclusive evidence that some dinosaurs had feathers, further linking them to birds.

Benton and his colleagues didn't actually see the reddish color itself. Using an electron microscope, they spotted the specific cellular signs of the color. An earlier study by another group of researchers and Benton's team found similar cellular color hints in prehistoric bird feathers.

Drawings of dinosaurs show them in all sorts of hues, usually duller earth tones such as brown and gray, but scientists have only speculated on their coloring. As their connection to birds came to light, so did the idea of brighter colors. But until now, there was no proof of any coloring.

Before Benton's technique, which is likely to be copied with other dinosaur fossils, paleontologists had to look to a dinosaur's anatomy to guess at colors, said famed dinosaur expert Paul Sereno at the University of Chicago. The color and the feathers were probably used for display, like a peacock, he theorized. Sereno, who wasn't part of Benton's team, called it a "landmark paper" that gives us "a sneak peek at how they might have appeared when alive."

"That's really cool just to be able to pin down this aspect," said University of Maryland paleontologist Thomas Holtz Jr., who wasn't part of the discovery team. "It does sort of help bring a more complete view of the living creature . . . and further from just being a bunch of bones."

This dinosaur was "a dinky little guy," Holtz said. Adult Sinosauropteryx were about 3 feet long, but the tail accounted for more than half of that length and it had a long neck, so "there's not a lot of dinosaur there," he said. It fed on small mammals, sort of like a prehistoric roadrunner, he said.